作者: Sue Wickner , Joel Hoskins , Keith McKenney
DOI: 10.1007/978-3-642-76988-7_31
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摘要: Two E. coli heat shock proteins, DnaK (the hsp70 homolog) and DnaJ activate the specific DNA binding function of replication initiator protein, RepA, plasmid P1 by about 100-fold (Wickner et al., 1991). The activation is ATP-dependent DNA-independent. mechanism conversion RepA dimers to monomers monomer form binds with high affinity origin DNA. Treatment reversible chemical denaturants also converts simultaneously activates binding. Increasing protein concentration deactivates RepA.